Flat-arch concrete floor construction



'-Feb. 19, 1929. 1,702,749

. l R. K. SCHUTT FLAT ARCH CONCRETE FLOOR CONSTRUCTION Filed March 1, 192e 5 sheets-sheet 1 Feb. 19, 1929.

. ,.R. K. SCHUTT FLAT ARCH oNcRE'ra FLOOR ooNsTRUcTIoN 5 Sheets-Sheet 2 Filed arch 1, 1926 0 /D In 1 1 ma am. z

Feb. 19, 1929.

R. K. SCHUTT FLAT ARCH CONCREII FLOOR CONSTRUCTIN Filed March l, 1926 5 Sheets-.Sheet 3 Patented ch; i9, 1929.`

UNITED] STAT nonnm* x. sonora', or 'cHIcAGo,-1Ln1i\iors,

:FLATsABcH cononn'rr: FLOOR coNsmRUe'rrom.

l Application; med March4 1, [1f92e. seriaifN'a 91,311.y

This invention relates .more `paiticularly to a Hoor construction havingaplurality of flat arches formed of'a key tilel and. h aunch blocks which are. so set to permit reinforced conc-rete goists toA separate the flat arches for producing a floor construction vcapalole' of 11i-addition. to asustaining its own weight superimposed load.

lt is an oh'ect'cr this invention :to-provide a concretel floor constructionwher'ein a series of hollow' tiles-are arrangedto-form flat concrete with a maximum use'of the cheaper and lighter materialsfsuchas hollowtile or blocks. y v v Y v Itis furthermore an object of this invention to provide a concrete iioor'construction adapted' to employ reinforced concrete joists' ,running in oneV vo-rin two directions for the purpose ofvcarrying loads in either one'. or A hotli directions, to ther supporting beams or gi-rdersto meet individual requirements,such

as a :door construction embodying hollowtilev fia-t arches separated reinforced concrete joists-with the upper and lower areas of. the

flat arches'exposed or having the/entirearea of the supporting arches covered"` with. ay

coating of concrete to ahford lan added structural value in resisting stresses as well as pro'- viding a hard smooth. surface for the-floor.'

it is an important'ohject. ofthis invention to provide an improved concrete fioor con:- structionof simplified, ineiipensive construction and :of reduced weight combining Athe use offiat tile archeshaving concrete or tile hers with reinforced Aconcrete suv ortin'fr .J i t joists to produce a practical` and economical system of floor construction'.

f Other and further important ohjfectsfof` Vthis invention will he 'appa-rentfrom thedisclosures inthe specificationand the accom-V panying drawings.

Theainventiom in. a i p15e-ferited:v kform, is il'- tion,l only..

PATENT oFFicE.

lustrated iny the drawings and hereinaftery more fully described..

`On the drawings: i l

Figure 1 1s a-.fragmenta-i-'yplan view ofY a `'section of al fiat arch concrete yfloor construction embodyingy the principles of' this inven--` tion and'having,reinforcements lengthwise; `and cross-wise of the floor construction.

.p Figure isa fragmentary vertical 'section' ytakenon line IIe- II of Figure l.

-Fig-ure 3 is an enlarged fragmentary vertical section ure L Y Figure 4L is vav fragmentarytop plan view of'alnodiiied forni of floor .construction where i taken on line III-III of Fig- 5 is van enlarged v transverse ver- Figure .taken Von line V--V` of tical detail` section Figure 4.1

in the reinforcement runs inone dirccf Figure l6 is a vertical y detaill sectionztalen on line VI'Vl of Figure 4.

flligure 7 isa fragmentary transverse vertical section of another modified form :of floor` lconstruction:using. different types of hollow tiles to permit the use of reinforced vT-cross sectioned joists `r l f Figure Sisa fragmentary vertical section through anothermodiied formy of ioor construction usi-ngf a different style of hollow tile and having the hat arches ycompletely coveredwith concrete. y v I l' F igure9 is another vertical detail'secti-on through still another modified formr of concrete oor construction wherein-the hollow tile is positioned to permit the'formation of concrete keys therebetween with the-upper areas ofthe `flat arches completely covered with concrete. f

Figure- 10 is alfragmentary verticalsection through a modified form of floor construction y in Figures ,8 and ,9 is used with the upper and lowerareas., of said tile exposed.

Figure' 1l illustrates a vertical detailsec@ construction using another l type of hollow tile permit-ting; the formation ofconcrete keys and reinforced. concrete ITi-cross sectioned j oists between the flat tile arches.'y v Figure 12 is an end view of one type of hol'- low tile having the end thereof covered? hype. metal or fiber cover. f

Figure' 13- ist Sid@ devffierifoifjthe me ana; cover illustrated in-FgurelQ/ y l l i As shown on the. ,drawings1.;r f

f wherein hollow tileV of the type illustrated A -ioe'k tion through another modified form'offloor v elO Referring to Figures 1, 2 and 3, the reference numeral 1 indicates a plurality of vertical concrete columns connected by reinforced concrete beams 2. The improved ilat arch concrete floor construction consists of a plurality of parallel flat arches each comprising a plurality of haunch blocks l separated by hollow key'tile 4l having' inclined side faces. rlhe key tile 4; is inverted as clearly illustrated in Figure 3 and is positioned between the haunch block l to form a key or wedge block. rlhe flat arches are arranged adjacent one another to form a filler or form with each lillerv having` the ends thereof reduced in width as it nears the supporting beams. .lhis reducing of the width of the ends of the fillers produced by reducing the number of hollow tiles in the end arches from three to two and then to one pi ece, thereby affording an arrangement which makes it possible to leave suflicent con -retc in depth and breadth near the supporting; beam to take care of shearing and neeative con'ipression stresses. As clearly illustrated in Figure 1 the parallel flat tile arch lillers are fori-ned of a plurality of arches, certain groups of which are separated from one another. rlhe fiat 'arches as just described are placed upon temporary licor form in proper spaced relation after which concrete is poured around said flat arches and over reinforcing rods 5 thereby forming reinforced wedge-shaped longitudinal concrete joists 6 and reinforced transverse Conor-ete joists 7. The reinforced concrete joists (l separate the parallel .fillers while the reinforced concrete joists 7 .separate the group of flat arches comprising the fillers. lt will thus be seen that Figures l, 2 and 3 illustrate an improved flat arch concrete floor construction of a type wher-ein the 'licor is reinforced both lengthwise and crosswise at right angles to each other thereby distributine` the load of the floor panel to 'he supporting' beams or four sides of the floor panel.. A two-way system of reinforced vfloor construction isvthus provided permittingi the carryingl of maxiniui'n loads on a given span with a minimum use of material? a reduced thickness of floor construction as well as a reduction of the dead weight of the floor.

Figures el, 5 and. 6 illustrate a modilicd form of flat arch concrete floor construction wherein the rein fin'cement runs in one direction only. in this type of constl.'iu:tion a plurality of parallel fiat arch fillers are einployed, each made up of a plurality ol" hollow haunch blocks 9, having their upper longitudinal outer corners notched as at S). rllhc haunch blocks 8 are separated by a key or wedge tile l07 as clearly illustrated in Figure 5. lThe flat arch fillers have the end portions thereof reduced in width similar to the arrangement hereinbefore described in connection with Figure 1. The flat arch fillers are mounted on la temporary floor form in parallel relation as illustrated in Figure 4L after which concrete is poured between the fillers over reinforcingrods 11 to form El"- cross sectioned connecting joists 12. rllhe T- cross-sectional construction of the reinforced joists 12 is made possible by the use of the haunch blocks 8 having the notched portions 9 therein so positioned that a zl`cross sectioned area is provided between adjacent flat arches.

Figure 7 illustrates a modified form of floor construction wherein hollow intermediate tiles 13 and haunch blocks 1lare arranged in groups with the hollow tiles 13 inclined in opposite directions with the outer faces thereof abutting` against inclined faces of the haunch blocks 14. yThe haunch bloc is 14 are of less height than the tiles 13 thereby af.- fordingv annif-set. rl`he til-es13 and '1e are ranOed to form `a flat 'arch havine a wedc'eb D C3 shaped. groove disposed longitudinally thereof which when filled with concrete ailords av concrete key 15. Reinforcing' members or tie rods lli are positioned in groups between adjacent fiat arches and are cov-ered with concrete to form T-cross sectioned joists 17 acting to hold the hollow tiles 13 and lll of each flat arch in arched relation to form a comcrete between the flat arches over reinforcing.

rods 1.9 to forni reinforced concrete joists 20. rllhe concrete is poured to flow over the topV of the fiat arches to form a thin layer ofrconcrete 21 to produce a reinforced concrete floor structure having a hard upper face.

F igure 9 is al modified form of concrete floor construction similar to that illustrated in Figure 8, with the exception thatthe hollow tiles 1% are arranged with the int-ermediate tile 18 positioned the same as the haunch blocks thereby aifordinev longitudinally disposed concrete keys 2:2 between adjacent arches of the floor structure.

Figure 10 .illustrates another vmodified form of concrete floor construction wherein hollow lzeysliape `l tiles 28 are positioned to form a loiuritndinal groove tliercbet'ween, adaptcdlto be lilled with concrete'to formv a concreto key Q4. rlhe space betweenl adjacont flat arches is provided with reinforcing rods 25 covered by concrete which forms a j oist 2G. The reinforced j oists 26 acts to hold the tiles of each of the flat arches tightly compressed againstthe sides of the respective` concrete keys 24e to form the completed reinforced licor structure.

Figure 11 illustrates still another forni of vwill thus be seen that the improved flat arch reinforced concrete floor wherein hollow tiles 27 are positioned with the inclined surfaces thereof diverging upwardly to afford a long: tudinal groove which is filled with concrete" to form a. concrete key 28. Each of the hol-v low tiles 27 is notchedvas at 29 along the. upper outer longitudinal edge. Each of the flat arches comprises two hollow 'tiles 27 thereby affording a T-cross ysectioned area between adjacent flat arches wliichis filled with concrete' to cover reinforcing rods 30 to form reinforced T-joists 3l,

lEigures l2 and 13 illustrate'a hollow. wedge tile provided witha metal or fiber closure plate 33 to close one end of the tile to prevent concrete from running'into the tile. It will, of course, be understood that the end tile members of thevarious fillers hereinbefore described may be provided with closure plates so that there will be no wastev of concrete resulting from concrete flowing into the open'ends ofthe end tiles forming the various fillers. T he use of the closure plates` 33 not only prevents a lwaste of material butV also prevents anyincrease in the dead! load to be carried by the floor structure. v

, ln the formation .of the reinforced flat arch floor structures hereinbefore described, it, of course, will be understood that the tile arches are placed on temporary forms of falseworki Y'which securely support the entire structure in place until the concrete has been poured and allowed to set sufficiently over the reinforcingrods and betweenthe flat arches. lt

concrete floor construction is adapted to meet all the requirements as to the'various stressesl and strains and employs only a minimum ofA the expensivematerials such as steel and concrete with a maximum use of the cheaper and lighter' materials suchlas thehollow tiles or blocks; A 'marked reduction in the cost of materials as vwell as a simplified ypractical method of installation or. erection is obtain-k able with the improved flatarch construction of this invention. n

l` ain aware that' numerous detailsjof con,- struction may be varied through a wide range without departing` lfrom the principles of this invention, and I therefore do notfvpurpose limiting the patent granted hereon, otherwise than necessitated by the prior art.

l claim as my inif'ention: y

l. il; concrete floor construction coinpr'sing a plurality of reinforced'concrete joists separatinga plurality of flat fillers tapered at the ends and each constructed of hollow tiles separated by concrete keys and heldin associatedposition by said reinforced con!y Y `60 2. The combination with 'a' reinforced concrete j oists.

rated by concrete wedge members extendingV V,from the top to the bottom of said filler.

3. A concrete floor'construction vcomprising Yafplurality ofrparallel flat archescon- -structed of hollow tiles Yarranged in abutting relation and associated, to form fillersyreduced in width, at theends, concrete poured between the tiles offeach archito form concrete keys, reinforcing members positioned between the lillersand'concrete poured over said yreinforcing members andl between said fillersto form reinforced joists having enlarged ends filling the space betweenv the reduced'ends of the fillers to form the floor.

4l. vA `concrete floor construction comprising ak plurality of reinforced beams, a plu-l rality of flat arches positioned between said y beams to form Afillersphaving tapered ends,l

with each fiat arch comprising a plurality of hollow tile having inclined,faces, said tile being grouped in keyed relation with'one another by concrete wedge: keys formed be-` tween the tileereinforcing rods between said fillers and concrete filling the'saace between said reinfo'reedbeams and said flat arches to form reinforced `oists havin" enlarged end v l o. t. portionsadapted kto imite with said flat arches to form the floor. Y v e l 5.' A concrete loor construction comprising groups of hollowtile members having completed reinforced inclined faces and` arranged in groups to form flat arches, with said arches having the tile members disposed in `staggered, rowsv to` form fillers having tapered ends, reinforcing members to formconcrete'keys between lsaid tile members andreinforced concrete Joists c inen'ibers positioned between saidjarches and n concrete poured betweensaid archesand tile between said arches vwhich `serve to hold the t flat arches lin an arched posit-ion to form the completed -floor.

In testimony whereof lhavo hereunto subscribed my name'.

y n. K, SGHUTT. 

